So iceberg lettuce "wins" by being low in calories, rather than high in nutrients. It's a common problem with any metric involving division. Salt water complete

So iceberg lettuce "wins" by being low in calories, rather than high in nutrients. It's a common problem with any metric involving division. Salt water completely breaks it. Anyways, are nutrients even a more-is-better sort of thing, or is nutrition more or less threshold-based?